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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!--  删除 object 中某个属性 m -->
    <script>
        var obj = {
            name:'小陈',
            age:28,
            region:'china'
        }

        delete obj.age;
        console.log(obj);   
    </script>
</body>
</html>